jade.content.schema
Class ObjectSchema

java.lang.Object
  |
  +--jade.content.schema.ObjectSchema

Direct Known Subclasses:

ContentElementSchema, TermSchema

public abstract class ObjectSchema

extends java.lang.Object

Author:

Federico Bergenti - Universita` di Parma

Field Summary

static int	MANDATORY
static int	OPTIONAL

Constructor Summary

protected

ObjectSchema(java.lang.String typeName) Constructor

Method Summary

protected void	addBaseSchema(ObjectSchema base) Adds a base schema.
protected void	addElement(java.lang.String name, ObjectSchema elementSchema) Add an attribute to the schema.
protected void	addElement(java.lang.String name, ObjectSchema elementSchema, int cardinality) Add an attribute to the schema.
java.lang.String[]	getNames() Returns the names of all attributes.
ObjectSchema	getSchema(java.lang.String name) Retrieves an attribute's schema.
java.lang.String	getTypeName() Retrieves the name of the type of this schema.
boolean	isAttribute(java.lang.String name) Is name an attribute?
boolean	isMandatory(java.lang.String name) Is the attribute name mandatory?
abstract AbsObject	newInstance() Creates a new instance.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

MANDATORY

public static final int MANDATORY

OPTIONAL

public static final int OPTIONAL

Constructor Detail

ObjectSchema

protected ObjectSchema(java.lang.String typeName)

Constructor

Parameters:

typeName -

Method Detail

addElement

protected void addElement(java.lang.String name,
                          ObjectSchema elementSchema,
                          int cardinality)

Add an attribute to the schema.

Parameters:

name - name of the attribute.

elementSchema - schema of the attribute.

cardinality - cardinality, i.e., optional or mandatory

addElement

protected void addElement(java.lang.String name,
                          ObjectSchema elementSchema)

Add an attribute to the schema.

Parameters:

name - name of the attribute.

elementSchema - schema of the attribute.

addBaseSchema

protected void addBaseSchema(ObjectSchema base)

Adds a base schema.

Parameters:

base - the base schema.

getNames

public java.lang.String[] getNames()

Returns the names of all attributes.

Returns:

the names of all attributes.

isMandatory

public boolean isMandatory(java.lang.String name)
                    throws OntologyException

Is the attribute name mandatory?

Parameters:

name - name of the attribute.

Returns:

true if the attribute is mandatory.

Throws:

OntologyException -

isAttribute

public boolean isAttribute(java.lang.String name)
                    throws OntologyException

Is name an attribute?

Parameters:

name - name to test.

Returns:

true if name is an attribute.

Throws:

OntologyException -

getSchema

public ObjectSchema getSchema(java.lang.String name)
                       throws OntologyException

Retrieves an attribute's schema.

Parameters:

name - name of the attribute.

Returns:

the schema of attribute name

Throws:

OntologyException -

getTypeName

public java.lang.String getTypeName()

Retrieves the name of the type of this schema.

Returns:

the name of the type.

newInstance

public abstract AbsObject newInstance()

Creates a new instance.

Returns:

the new instance.